Detachable bridge spring connection



1931- v. TANASSO ET AL 4 1,839,169-

DETACHABLE BRIDGE SPRING CONNECTION Filed Dec. 20, 1929 mvamos ITNESSES Wuzcerzfi 5222261650 1 I W I f c74005 JPameran W -WW w ATTORNEY-5 Patented Dec. 29, 1931 S ATES PATENT: op l YiL-NCENT, TANASSO, on new YORK, ANnJAoon J; POMERANZ, or BnooKnYmNEw YORK DE AGHQABL BBIDG srmne CONNECTION,

Application filed December 20, 1929. Serial No. 415,492.

This inventionrelates to ophthalmic mountings, and has particular reference to animprovement in adetachable connection between a bridge spring'and a socketed terminal element which attaches the bridge spring of a folding Oxford to the lens frame.

In that form of detachable connection illustrated, where the terminals of the bridge spring are snugly fitted into the terminal elelo ment and said terminal element is provided with a slot to receive a spring tongue designed to snap into. the socket when the terminal of the bridge spring is shoved home in the socket, dificulties have arisen where the spring '25 tongue fails to spring into place for locking the spring in connected relation with the terminal element. This difiiculty may arise where the nature of the material from which the bridge spring is constructed fails to im- 29 part to the small tongue the necessary resiliency or where, for other reasons, the locking tongue fails to move to its locking position.

The present invention, therefore, comprehends broadly a means for facilitating the positive deflection of the tongue into the slotted portion of the terminal element, which means specifically conslsts in providing the terminal element with an apertured portion communicating with the socket and disposed opposite the slotted tongue receiving portion of the terminal element for permitting of the introduction through said aperture of an implement to positively deflect the tongue from the plane of the bridge spring to a position 5.123 where it engages with the wall of the slotted portion. v

The present invention further aims to provide in a bridge spring terminal element of the character set forth, a means for facilitating the positive deflection of the locking tongue into locking engagement, which means is extremely simple, does not materially add to the expense of production and which is highly efficient in its purpose.

With the above recited and other objects in view, reference is had to the following description and accompanying drawings, in which there is exhibited one example or embodiment of the invention, while the claims define the actual scope-of the same.

In the drawings: a

Figure 1 is a fragmentary front view of a folding Oxford frame illustrating the detachable bridge spring associated with the terminal element.

Figure 2 is an enlarged fragmentary plan view illustrating the improved form of terminal element with the bridge spring in place.

Figure 3 1s an enlarged fragmentary sectional view taken approximately on the line of Figure 2 and illustrating the manner i'nwlii'ch the locking tongue'of the'bridge spring is positively deflected into itctivelocking engagement with the slotted portion of the terminal element.

Figure 4: is an enlarged sectional plan view taken approximately on the line indicated at 4 l in Figure 3.

Figure 5 is a plan view of a bridge spring equipped with the locking tongues i it 'opposite-termi ials. I

Referrin to-the drawings by characters-of reference designates the bridge spring of av folding Oxford which is detacliably associated with a terminal element B, which terminal element is in turnpivotally associated as at O with the lens rim D in the usual manner.

Heretofor'e the terminal element B has been provided with a longitudinally extending socket. E: having'co'nverging side walls F, which socket was designed to snugly receive theta-.pered terminals G- of the bridge spring A, the socket being formed on its under side with a slot H designed to receive thelocking tongue I formed. in each of the bridge spring terminals G. Obviously, the tongues I'are normally bent or deflected downwardly and are intended under their inherent resiliency 7 intothe slot H and engage with the of the introduction through said aperture K of a suitable implement L, such as illustrated in broken lines in Figure 3. It thus follows that in event of the failure of the tongue I to snap into its active locking position, the manufacturer has only to introduce any suitable implement such as illustrated, through the aperture K and to engage the same with and positively deflect the tongue I to the locking position. The aperture K is extremely small and unobtrusive and ordinarily would not mar the appearance of the frame but, if desired, a rosette or other ornamentation M may be formed by the aperture K to further mask the aperture from View.

From the foregoing, it will thus be seen that an improvement indetachable connections between a bridge spring and a terminal element has been devised which overcomes a deficiency in that form of detachable connection which has heretofore existed, and this without increasing the cost of manufacture or materially altering the usual structure. V

Y Vhat is claimed is:

1. In asocketed bridge spring terminal element having a slotted portion for receiving a locking tongue formed on the bridge spring terminal, means defining a passageengaging and deflecting the tongue into the slot of said slotted portion.

4. In a detachable connection between a bridge spring and a socketed terminal element within the socket of which element the bridge spring terminal snugly fits and in which said terminal element is provided With a slot and the bridge spring terminal with a tongue adapted to engage within said slot; an aperture formed in said terminal element directly opposite said slot, to'afi'ord means through which an implement may be projected for facilitating the positive deflection of the tongue into the slotted portion of the terminal element for effecting the active locking engagement of the tongue with the slot.

VINCENT TANASSO. JACOB J. POMERANZ.

way in said terminal element for admitting an instrument to positively deflect said tongue into the slotted portion of said terminal element.

2. In a socketed bridge spring terminal element having a slotted portion for receiving a locking tongue formed on the bridge spring terminal, means for facilitating the positive deflection of the tongue into the slotted portion of said terminal element consisting of an apertured portion of said terminal element disposed opposite the slotted portion to receive therethrough an implement for engaging and deflecting the tongue into the slot of said slotted portion.

3. In a socketed bridge spring terminal element having a slotted portion for receiving a locking tongue formed on the bridge spring terminal, means for facilitating the positive deflection of the tongue into the slotted portion of said terminal element consisting of an apertured portion of the terminal element disposed opposite the slotted portion thereof and communicating with the socket to receive therethrough, an implement for 

